If you dream of hybrid animals (half one creature, half another), this symbolizes that you are learning to incorporate different sides of yourself, as you grow and mature into a fully-formed personality. Also look up the animals that the hybrid was made of, for additional insight into these sides of yourself.
If people were experimenting on these animals in your dream, or they were locked up in a lab, this suggests that an aspect of yourself is being repressed. You may feel that you are not able to fully express your desires and emotions. However, if you rescued the animals from the experiments, you are successfully facing emotions and characteristics represented by the animals.
If you dreamed of a hybrid car, you want to make a change for the positive. Think about what negative people or habits are holding you back from being a happier person, and consider making a change.
The dream symbol you are looking for is absolutely there, try searching the symbol one by one.